Results 81 to 90 of about 17,724 (304)

Evaluation of pyrolysis residue derived by oily sludge on removing heavy metals from artificial flotation wastewater

open access: yesSouth African Journal of Chemical Engineering, 2020
Pyrolysis residue, with the porous structure similar to activated carbon, was proposed as a material to remove heavy metals with low levels from synthetic flotation wastewater in the work.
Huifen Yang, Zhen Li, Wenkai Ma, Peng Fu
doaj   +1 more source

Microbial ecology of Thiobacillus ferrooxidans [PDF]

open access: yes, 1990
FINAL TECHNICAL REPORT TO U.S. DEPARTMENT OF THE INTERIOR Geological Survey Washington. D.C.The contents of this report were developed in part under a grant from the Department of the Interior, U.S. Geological Survey.
Braddock, Joan F.   +5 more
core  

Modelling start-up performance of anaerobic digestion of saline-rich macro-algae [PDF]

open access: yes, 2014
Some of the key factors affecting the adaptation of anaerobic digestion processes to increasing levels of salinity were determined in batch tests using brown seaweed as a feedstock.
Akunna, Joseph C., Hierholtzer, Anthony
core   +3 more sources

Pulsed Electrolysis Prevents Sulfur Poisoning for Sustained Sulfide Valorization

open access: yesAdvanced Materials, EarlyView.
Integrating pulsed electrolysis with Sc‐doped NiFe‐LDH enables sustainable sulfide valorization, achieving >500 h stability, 99.8% efficiency. Moreover, this technology produces high‐purity sulfur and sodium formate, boosting profit by 121% to $1,294.7 per tonne of hydrogen.
Zhiyan Hou   +5 more
wiley   +1 more source

"Memory loss" during mineral processing: Application to base metals traceability

open access: yes, 2013
International audienceTraceability of concentrates is required to introduce transparency in the trade of raw minerals. In this context traceability may be considered as a kind of inversion process: studying the product sold (i.e.
Augé, Thierry   +4 more
core   +4 more sources

DEFLUORIDATION OF DRINKING WATER BY ELECTROCOAGULATION/ELECTROFLOTATION - KINETIC STUDY [PDF]

open access: yes, 2010
A variable order kinetic (VOK) model derived from the langmuir-freundlish equation was applied to determine the kinetics of fluoride removal reaction by electrocoagulation (EC).
Bennajah Mounir   +3 more
core   +1 more source

Magnetically Actuated Drops‐on‐Stilts Microrobots for Transport and Delivery of Hydrophobic Cargo

open access: yesAdvanced Materials Interfaces, EarlyView.
Iron oxide nanoparticles and oil droplets in external magnetic fields form “drops‐on‐stilts” microrobots that transport hydrophobic cargo. Tunable nanoparticle–droplet interactions generate stilt‐like structures. Field rotation enables walking, obstacle navigation, and collective motion.
Oluwafemi Ligan   +9 more
wiley   +1 more source

The Feasibility of Reclaiming Shell Material from Investment Casting [PDF]

open access: yes, 1992
This report examines the feasibility of investment shell component reclamation. Shell material components and their compositions are investigated with an industry survey, a study of the available literature, and analysis of specimen shell materials ...
Peters, Timothy M., Twarog, Daniel L.
core  

Water‐Stable Paper‐Based Laser‐Induced Graphene With Asymmetric Water Adhesion and Wettability

open access: yesAdvanced Materials Interfaces, EarlyView.
Paper‐based electronics are attractive for sustainable and disposable devices, but often fail in wet environments. By introducing Parafilm into cellulose paper combined with laser conversion, two graphene surfaces with different water interactions are created.
Lingyin Meng   +3 more
wiley   +1 more source

Kinetics and mechanism of sphalerite leaching by sodium nitrate in sulphuric acid solution [PDF]

open access: yes, 2012
Interest for application of hydrometallurgical processes in a processing of complex sulphide ores and concentrates has increased in recent years. Their application provides better metal recoveries and reduced emission of gaseous and toxic ageneses in ...
Marković B.   +5 more
core   +1 more source

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